<template>
  <view class="uni-steps">
    <view :class="[direction==='column'?'uni-steps__column':'uni-steps__row']">
      <view :class="[direction==='column'?'uni-steps__column-text-container':'uni-steps__row-text-container']">
        <view v-for="(item,index) in options" :key="index"
              :class="[direction==='column'?'uni-steps__column-text':'uni-steps__row-text']">
          <text :style="{color:index === active?activeColor:deactiveColor}"
                :class="[direction==='column'?'uni-steps__column-title':'uni-steps__row-title']">{{ item.title }}
          </text>
          <text :style="{color: deactiveColor}"
                :class="[direction==='column'?'uni-steps__column-desc':'uni-steps__row-desc']">{{ item.desc }}
          </text>
        </view>
      </view>
      <view :class="[direction==='column'?'uni-steps__column-container':'uni-steps__row-container']">
        <view :class="[direction==='column'?'uni-steps__column-line-item':'uni-steps__row-line-item']"
              v-for="(item,index) in options" :key="index">
          <view
              :class="[direction==='column'?'uni-steps__column-line':'uni-steps__row-line',direction==='column'?'uni-steps__column-line--before':'uni-steps__row-line--before']"
              :style="{backgroundColor:index<=active&&index!==0?activeColor:index===0?'transparent':deactiveColor}">
          </view>
          <view :class="[direction==='column'?'uni-steps__column-check':'uni-steps__row-check']"
                v-if="index === active">
            <uni-icons :color="activeColor" :type="activeIcon" size="14"></uni-icons>
          </view>
          <view v-else :class="[direction==='column'?'uni-steps__column-circle':'uni-steps__row-circle']"
                :style="{backgroundColor:index<active?activeColor:deactiveColor}"></view>
          <view
              :class="[direction==='column'?'uni-steps__column-line':'uni-steps__row-line',direction==='column'?'uni-steps__column-line--after':'uni-steps__row-line--after']"
              :style="{backgroundColor:index<active&&index!==options.length-1?activeColor:index===options.length-1?'transparent':deactiveColor}">
          </view>
        </view>
      </view>
    </view>
  </view>
</template>

<script>
/**
 * Steps 步骤条
 * @description 评分组件
 * @tutorial https://ext.dcloud.net.cn/plugin?id=34
 * @property {Number} active 当前步骤
 * @property {String} direction = [row|column] 当前步骤
 *  @value row 横向
 *  @value column 纵向
 * @property {String} activeColor 选中状态的颜色
 * @property {Array} options 数据源，格式为：[{title:'xxx',desc:'xxx'},{title:'xxx',desc:'xxx'}]
 */

export default {
  name: 'UniSteps',
  props: {
    direction: {
      // 排列方向 row column
      type: String,
      default: 'row'
    },
    activeColor: {
      // 激活状态颜色
      type: String,
      default: '#2979FF'
    },
    deactiveColor: {
      // 未激活状态颜色
      type: String,
      default: '#B7BDC6'
    },
    active: {
      // 当前步骤
      type: Number,
      default: 0
    },
    activeIcon: {
      // 当前步骤
      type: String,
      default: 'checkbox-filled'
    },
    options: {
      type: Array,
      default() {
        return []
      }
    } // 数据
  },
  data() {
    return {}
  }
}
</script>

<style lang="scss">
$uni-primary: #2979ff !default;
$uni-border-color: #EDEDED;
.uni-steps {
  /* #ifndef APP-NVUE */
  display: flex;
  width: 100%;
  /* #endif */
  /* #ifdef APP-NVUE */
  flex: 1;
  /* #endif */
  flex-direction: column;
}

.uni-steps__row {
  /* #ifndef APP-NVUE */
  display: flex;
  /* #endif */
  flex-direction: column;
}

.uni-steps__column {
  /* #ifndef APP-NVUE */
  display: flex;
  /* #endif */
  flex-direction: row-reverse;
}

.uni-steps__row-text-container {
  /* #ifndef APP-NVUE */
  display: flex;
  /* #endif */
  flex-direction: row;
  align-items: flex-end;
  margin-bottom: 8px;
}

.uni-steps__column-text-container {
  /* #ifndef APP-NVUE */
  display: flex;
  /* #endif */
  flex-direction: column;
  flex: 1;
}

.uni-steps__row-text {
  /* #ifndef APP-NVUE */
  display: inline-flex;
  /* #endif */
  flex: 1;
  flex-direction: column;
}

.uni-steps__column-text {
  padding: 6px 0px;
  border-bottom-style: solid;
  border-bottom-width: 1px;
  border-bottom-color: $uni-border-color;
  /* #ifndef APP-NVUE */
  display: flex;
  /* #endif */
  flex-direction: column;
}

.uni-steps__row-title {
  font-size: 14px;
  line-height: 16px;
  text-align: center;
}

.uni-steps__column-title {
  font-size: 14px;
  text-align: left;
  line-height: 18px;
}

.uni-steps__row-desc {
  font-size: 12px;
  line-height: 14px;
  text-align: center;
}

.uni-steps__column-desc {
  font-size: 12px;
  text-align: left;
  line-height: 18px;
}

.uni-steps__row-container {
  /* #ifndef APP-NVUE */
  display: flex;
  /* #endif */
  flex-direction: row;
}

.uni-steps__column-container {
  /* #ifndef APP-NVUE */
  display: inline-flex;
  /* #endif */
  width: 30px;
  flex-direction: column;
}

.uni-steps__row-line-item {
  /* #ifndef APP-NVUE */
  display: inline-flex;
  /* #endif */
  flex-direction: row;
  flex: 1;
  height: 14px;
  line-height: 14px;
  align-items: center;
  justify-content: center;
}

.uni-steps__column-line-item {
  /* #ifndef APP-NVUE */
  display: flex;
  /* #endif */
  flex-direction: column;
  flex: 1;
  align-items: center;
  justify-content: center;
}

.uni-steps__row-line {
  flex: 1;
  height: 1px;
  background-color: #B7BDC6;
}

.uni-steps__column-line {
  width: 1px;
  background-color: #B7BDC6;
}

.uni-steps__row-line--after {
  transform: translateX(1px);
}

.uni-steps__column-line--after {
  flex: 1;
  transform: translate(0px, 1px);
}

.uni-steps__row-line--before {
  transform: translateX(-1px);
}

.uni-steps__column-line--before {
  height: 6px;
  transform: translate(0px, -13px);
}

.uni-steps__row-circle {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: #B7BDC6;
  margin: 0px 3px;
}

.uni-steps__column-circle {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: #B7BDC6;
  margin: 4px 0px 5px 0px;
}

.uni-steps__row-check {
  margin: 0px 6px;
}

.uni-steps__column-check {
  height: 14px;
  line-height: 14px;
  margin: 2px 0px;
}
</style>
